AVR-LibC 2.3.1 release

Release 2.3.1 is a quick followup on 2.3.0 that fixes two regressions. For details, see NEWS.md.

• An undefined reference to main error from the linker when main is provided in an archive, like in Arduino.
• A bug in util/setbaud.h.

AVR-LibC 2.3.0 release

This is the (long awaited, long deferred) version 2.3 release of AVR-LibC. There are quite many changes involved since the previous release, too many to mention all of them here.

Relevant part of NEWS.md:

https://github.com/avrdudes/avr-libc/blob/main/NEWS.md#changes-in-avr-libc-v230

AVR-LibC 2.2.1 released

Release 2.2.1 is a quick followup on 2.2.0.

The reason for rolling this release was to include check #971 in the configure script. It ensures a compatible version of Binutils is present.

When used with GNU Binutils older than v2.40, overflows of the data region may not be diagnosed.

AVR-LibC 2.2.0 released

This is the first version of the AVR-LibC project that is released from Github.

Relevant part of the NEWS file:

https://github.com/avrdudes/avr-libc/blob/16b742119eaed8d966929033b1ad325faea89798/NEWS#L1-L179

IMPORTANT:

This release requires GNU Binutils with at least version 2.40. Earlier versions cause the wrong address for the data being used on many devices, resulting in linker complaints that the data do not fit. See issue #971.